4个2相加                                            2×4=8

6+6+6                       4×2                  5乘4

4 + 4+4 +4 +4           6×3                 乘数是6和3

3+3+3+3+3+3           5×4                 2+2+2+2

5 +5 + 5 +5                                        3×6

2乘4                                                    4×5

8×9=         6×6=          4×7=         6×3=

7×6=         9×4=          8+9=          4×8=

9×7=         8×8=          3×5=         2×7=

9×9=         3+5=           1×6=          5×4=

9×5=      18+20=      58-47=     4×5=    8×7-7=

24+25=    35+12=      6×3=     26+13=    3×2×9=

5×7=      36-27=      45+13=    4×8=     68-19+19=

7+8=       14-13=      8×8=     36+2=    24+6+12=